Denial of Service Vulnerability in Oracle Database Server's Net Services
CVE-2026-83333

7.5HIGH

Key Information:

Vendor

Oracle
Status
Oracle Database Server
Vendor
CVE Published:
15 September 2026

What is CVE-2026-83333?

A vulnerability exists in the Oracle Net Services component of Oracle Database Server, allowing unauthenticated attackers with network access to compromise the service. Exploiting this vulnerability can lead to a complete Denial of Service (DOS), causing the Oracle Net Services to hang or crash repeatedly. Affected versions include Oracle Database Server from 23.4.0 to 23.26.3, making it crucial for users to address this issue promptly to ensure service availability.

Affected Version(s)

Oracle Database Server 23.4.0 <= 23.26.3

References

https://www.oracle.com/security-alerts/cspusep2026.html
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.